A ray incident on a glass prism undergoes minimum deviation when the
A
incident angle is equal to the angle of refraction
B
refraction angle equals 90o
C
incident angle equals 90o
D
incident angle is equal to the angle of emergence
Verified Correct Answer: D.
Physical Principles & Numerical Solution
At minimum deviation, it is observed that light passes symmetrically through, the prism such that the angle of incidence (io) is angle to the angle of emergency (eo).(i/e Io = eo)
Source: Myschool Past Questions Archive (Record #12748)